AN5290S Datasheet, PDF (1/6 Pages) Panasonic Semiconductor – Antenna diversity IC for on-vehicle TV

ICs for TV
AN5290S
Antenna diversity IC for on-vehicle TV
s Overview
The AN5290S is an on-vehicle television antenna-
diversity IC in which the noise detection circuit and an-
tenna changeover circuit are integrated on a single chip.
It is destined for NTSC/PAL system.
s Features
• Built-in vertical and horizontal synchronizing circuit
• It outputs changeover pulse for noise canceler.
• Built-in antenna changeover stop function
s Applications
• On-vehicle televisions
Unit: mm
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
0.3
7.2±0.3
9.4±0.3
SOP024-P-0375A
s Block Diagram
1st noise
amp.
2nd noise
amp.
ANT
choice
Noise
comparator
Diversity
On/Off
switch
ANT
select control
ANT
switch driver
ANT
select decoder
Sync.
sepa.
Sync.
control
Horizontal
OSC
ANT
switch control
Vertical
OSC
Phase
det.
1/12
divider
V-sync. Charge
sepa. pump
VCO
1